Spatial step size | Maximum error | Convergence order |
---|---|---|
\({h_{x}}= {h_{y}} =0.2\pi \) | 1.3969e − 04 |  |
\({h_{x}} ={h_{y}} = 0.1\pi \) | 9.5413e − 06 | 3.8719 |
\({h_{x}}= {h_{y}} = 0.05\pi \) | 5.9914e − 07 | 3.9932 |
\({h_{x}} = {h_{y}} =0.025\pi \) | 4.1990e − 08 | 3.8348 |